Non-Billable / Non-Specific Code
ICD-10-CM Y37.7 is the diagnosis code for Military operations involving chemical weapons and other forms of unconventional warfare. This code falls under the section "Legal intervention, operations of war, military operations, and terrorism" within Chapter 20 — External causes of morbidity (V00-Y99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as Y37.7. They are mutually exclusive:
Understanding where Y37.7 sits in the ICD-10-CM classification helps ensure proper coding:
No, Y37.7 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
Y37.7 is the ICD-10-CM diagnosis code for "Military operations involving chemical weapons and other forms of unconventional warfare". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of Y37.7 is Y37 ("Military operations"). Y37.7 provides a more specific classification within this category.
Y37.7 is located in Section Y35-Y38 — "Legal intervention, operations of war, military operations, and terrorism" within Chapter 20 of the ICD-10-CM Tabular List.
Y37.7 has 1 sub-code(s) that provide more specific detail: Y37.7X.
Use Y37.7 when the patients documented diagnosis matches "Military operations involving chemical weapons and other forms of unconventional warfare" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Military operations involving chemical weapons and other forms of unconventional warfare is Y37.7.
No, Y37.7 is non-billable. Use a more specific sub-code for primary diagnosis billing.
Y37.7 is in Chapter 20 of the ICD-10-CM Tabular List.
Type 1 Excludes for Y37.7 include: military operations involving incendiary devices (Y36.3-, Y36.5-).
Yes, Y37.7 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.